Treatment of sulfid ores.



UNITED STATES PATENT OFFICE.

JAMES A; McLAB'IY, OF TORONTO, ONTARIO, CANADA.

TREATMENT OF SULZFID ORES.

No Drawing.

To all whom it may concern.-

Be it known that I, J AMns A. MCLARTY, of the city of Toronto Province of Ontario, Canada, have invented certain new and use- (f)u1 Improvements in the Treatment of Sulfid res.

This invention relates to the treatment of sulfid ores in general, such as sulfids of nickel, cobalt, iron, copper, arsenic, molybdenum and zinc, and particularly to the treatment of nickel ores, my object being to oxidize the sulfids without roasting.

In carrying out my process I first suitably crush or pulverize the ore and if necessary treat it in a suitable concentrator to remove all the unnecessary quartz, gangue, dirt, etc., contained therein. The concentrates are then passed through a magnetic se arator which take out the ma etic iron an nickel sulfids, Ordinarily t e iron and. nickel sulfids are oxidized by roasting; I, however, treat them in a closed chamber with steam preferably saturated and preferably under a pressure of 125 lbs. to the square inch. In the reaction which follows the sulfur of the ore is replaced by the oxygen of the steam anl the sulfur itself combines withthe h drogen of the steam to form hydric-sul d (H 8). The nickel oxid thus formed is Specification of Letters Patent.

Application filed March 7, 1910. Serial No. 547,775.

Patented Mar. 21, 1911.

suitable manner and the hydric-sulfid also treated for the recovery of'the sulfur contained therein.

In the case of sulfids not containing mag- Y netic ores of course the magnetic separation will be omitted. In other respects the treatment will be substantially the same.

What I claim as my invention is 1. A process of treating nickel sulfidores which consists in powdering the ores, passing them through a magnetic separator, subjecting the separated magnetic sulfid ores to the action of steam under pressure, and in passing the oxids thus produced through a magnetic separator to take out any mag ore by the action of heat and oxidation and.

subsequently passing the ore through a magnetic separator to remove any magnetic lIOIl ores contained therein. I

Toronto, Ont., this 4th day ,of March, 1910. v r

JAMES A. McLARTY.

Si ed in the presence of- J. EDW. MABEE,

\ E. HALL. 

